python3-backoff binary package in Ubuntu Lunar amd64

 This module provides function decorators which can be used to wrap a
 function such that it will be retried until some condition is met. It
 is meant to be of use when accessing unreliable resources with the
 potential for intermittent failures i.e. network resources and external
 APIs. Somewhat more generally, it may also be of use for dynamically
 polling resources for externally generated content.
 .
 Decorators support both regular functions for synchronous code and
 asyncio's coroutines for asynchronous code.

Source package